knapp



(No Model.)

D. H.l KNAPP..

APPARATUS POR THE MANUPAGIURB OP GAS.

No. 413,190. Patented Oct.l 22, 1889.

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Int/@M27- KVM f Y NTTED STATES PATENT OFFICE.

DAVID II. KNAPI, OF NORVVIOH, NEW YORK, ASSIGNOR OF .ONE-HALE TO REED CAMPBELL, OF SAME PLACE.

APPARATUS FORATHE MANUFACTURE OF GAS.

SPECIFICATION forming part of Letters Patent No. 413,190, dated October 22, 1889.

Application filed January 2l, 1889. Sen'al No. 297,097. (No model.)

To @ZZ whom, 'it may concern.-

Be it known that I, DAVID H. KNAPP, of Norwich, in the county of Chenango and State of New York, have invented a new and useful Improvement in Apparatus for the Manufacture of Gas for Illuminating and Heating Purposes, of which the following-is a specification, reference being had to the accoxnpanyin g drawing.

1o This invention relates to apparatus for the manufacture of gas for heating and illuminating purposes from oils or liquid hydrocarbons.

The object is to provide a cheap and ecor5 nomical apparat-us for the purpose.

I will lirst proceed to describe, with reference to the accompanying drawing, an apparatus embodying my invention, and afterward point out its noveltyin the claim.

2o The drawing represents a vertical section of the apparatus.

A and B designate two retorts arranged one within the other, the inner one A being hereinafter termed the vaporizing-retort,

and the outer one B the decomposing-retort. These retorts are represented as of the form of upright cylinders with spheroidal or rounded bottoms. The outer or decomposing retort B is represented as having an 3o external flange b at its upper end, by which it is supported upon the top of the furnace O, which is represented as substantially like an ordinary stove. rlhe said retort is also represented as provided with a removable 3 5 cover b', firmly secured to its flange, in which is au opening, through which the inner retort A is inserted, the latter being provided at its upper end with an external flange a, which rests upon the coverb, and being also provided with a removable cover a. In the lower end of the inner vaporiZing-retort is an opening, into which is screwed or otherwise secured an upright pipe D, which extends upward into the said retort, nearly to the top thereof, and is open at its upper end, the said pipe forming communication between the upper part of the vaporiZing-retort A and the lower part of the decomposing-retort B.

E is a pipe for supplying oil to the vapor .of the furnace.

izing-retort A, said pipe entering the said retort through the cover of', and projecting downward into the said retort nearly tothe bottom thereof.

F is a pipe connected with the decompos- 5 5` ing-retort B at the top thereof, and forming an outlet for the gas, which may pass directly to a gas-holder or to any suitable purifying apparatus, whence a pipe leads to the gas-holder.

In the operation of this apparatus the oil introdueed through the pipe Eenters the vaporizing-retort A, which, being surrounded by the decomposing-retort B, is protected from the great heat of the furnace, but yet has heat enough imparted to it through the decomposing-retort B for the vaporization of the oil, which enters it at the bottom. The oil-vapor, rising to the top of the said retort A, nds its exit therefrom through the pipe D to the lower 7o part of the retort B, wherein it is decoml posed bythe great heat to which that retort is subjected by its exposure to the full heat The vapor, entering the decomposing-retort at the bottom, is caused to circulate within the annular space between the two retorts and to pass along the whole length or height of the heated surface of the decomposing-retort before reaching the outlet F, and therefore a veryperfect decompo- 8o sition of the vaporis obtained, and it is converted into permanent gas, to be diluted for use, as with air, as required for illuminating or heating purposes.

What I claim as my invention, and desire to secure by Letters Patent, is-

rlhe combination of the upright inner vaporizing-retort, the outer upright decompos ing-retort, and l the furnace outside of the latter, the oil-pipe entering the inner retort, 9oV

and an upright pipe connected with the inner retort at its lower end and openingl into the outer retort and having its open upper end extending into the inner retort, and an outlet-pipe for gas communicating with the outer retort, substantially as specified.

DAVID H. KNAPP. W'itnesses:

HENRY T. BROWN, REED CAMPBELL. 

